Inventory paired every path under one case spelling with every path under
each other spelling and listed all of them on each occurrence. An archive
with Foo/ and foo/ subtrees of N files each produced N-entry lists on 2N
occurrences: 4,000 such ZIP members yielded a 120 MB inspect_artifact
result and close to 1 GB of memory. The trie walks also recursed once per
path component, so a ZIP name with tens of thousands of components threw
RangeError.
A collision is now recorded at the segment where spellings diverge and
shared down that subtree by an iterative walk. Each occurrence names the
colliding prefix and the first other spelling, plus a count of further
spellings, each of which is its own occurrence.
Co-authored-by: Claude Opus 5.5 <noreply@anthropic.com>
morluto